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You searched for: subject:"Fault Tolerance"
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[texts]Fault Tolerance Techniques Minimize Switching Device Failures In Inductive Circuits OCR

Keywords: Fault Tolerance
Downloads: 11
[texts]Fault Tolerance Evaluationof Safety Critical Software OCR

Keywords: Fault Tolerance
Downloads: 14
[texts]Fault Tolerance Protection Techniques Ensureu C Reliabilityin Power Control Circuits OCR

Keywords: Fault Tolerance
Downloads: 11
[texts]Fault Tolerance Softwarefaulttolerancestavesofftheerrorsthatbesiegeu Psystems OCR2

Keywords: Fault Tolerance
Downloads: 16
[texts]Fault Tolerance-AR-102 Designing Reliable Softwarefor Automotive Applications OCR

Keywords: Fault Tolerance
Downloads: 14
[texts]Fault Tolerance Fault Tolerant Software In Real Time Single Chip Microcontroller Systems OCR

Keywords: Fault Tolerance
Downloads: 17
[texts]Fault Tolerance Born To Fail OCR

Keywords: Fault Tolerance
Downloads: 16
[texts]Fault Tolerance Self Checking Logic Flags Errors As They Happen OCR

Keywords: Fault Tolerance
Downloads: 20
[texts]Fault Tolerance Fault Protection Saves Multiplexers Switches And Downstream Circuitry OCR

Keywords: Fault Tolerance
Downloads: 16
[texts]Fault Tolerance Protect Your Data With Forward Error Correction OCR

Keywords: Fault Tolerance
Downloads: 14
[texts]Fault Tolerance Designing For Hostile Environments OCR

Keywords: Fault Tolerance
Downloads: 20
[texts]Fault Tolerance Solving The Software Safety Paradox OCR

Keywords: Fault Tolerance
Downloads: 23
[texts]Fault Tolerance Software Fault Tolerance Staves Off The Errors That Besiegeu P Systems OCR

Keywords: Fault Tolerance
Downloads: 21
[texts]Fault Tolerance Let Your Application Determine The Right Microprocessor Supervisor OCR

Keywords: Fault Tolerance
Downloads: 15
[texts]Fault Tolerance-IO For Embedded Controllers Part1and2OCR

Keywords: Fault Tolerance
Downloads: 20
[texts]Fault Tolerance Pedigree Protection Watchdog Circuits OCR

Keywords: Fault Tolerance
Downloads: 21
[texts]Fault Tolerance Fault Tolerant Electronic Systems OCR

Keywords: Fault Tolerance
Downloads: 17
[texts]Fault Tolerance Windowed Watchdog Increases Fault Coveragein Sensitive Applications OCR

Keywords: Fault Tolerance
Downloads: 17
[texts]Fault Tolerance-AP-125 Designing Microcontroller Systemsfor Electrically Noisy Environments OCR

Keywords: Fault Tolerance
Downloads: 39
[texts]Fault Tolerance Designingfor Reliabilty Maintainabilltyand Safety Parts1and2OCR

Keywords: Fault Tolerance
Downloads: 16
[texts]Fault Tolerance Windowed Watchdog Timers Enhance System Security OCR

Keywords: Fault Tolerance
Downloads: 18
[texts]Fault Tolerance Lil Bow Wow OCR

Keywords: Fault Tolerance
Downloads: 18
[texts]Fault Tolerance-AP-125 Designing Microcontroller Systemsfor Electrically Noisy Environments

Keywords: Fault Tolerance
Downloads: 17
[texts]Fault Tolerance Fault-tolerantsoftwareinreal-timesingle-chipmicrocontrollersystems

Keywords: Fault Tolerance
Downloads: 24
[texts]Fault Tolerance-AR-102 Designing Reliable Softwarefor Automotive Applications

Keywords: Fault Tolerance
Downloads: 15
[texts]Fault Tolerance Watching The Watchdog OCR

Keywords: Fault Tolerance
Downloads: 13
[texts]Fault Tolerance Safety In Numbers OCR

Keywords: Fault Tolerance
Downloads: 121
[texts]Fault Tolerance Softwarefaulttolerancestavesofftheerrorsthatbesiegeu Psystems

Keywords: Fault Tolerance
Downloads: 14
[texts]Floating-diffusion electrometer with adjustable sensitivity - NON
The effective capacitance of the floating diffusion in a floating-diffusion electrometer is modified to adjust electrometer sensitivity. This is done by changing the direct potential applied to a gate electrode proximate to the floating diffusion.
Keywords: FAULT TOLERANCE; PYROTECHNICS; PATENTS
Downloads: 160
[texts]27
Mobile nodes such as mobile phones, laptops etc are widely used nowadays. Theservices must be always available, reliable and uninterrupted. The communication must besecure. Fault tolerance is the most important feature of these systems. To make a systemfault tolerant at operating system level we apply check pointing. Security threats likeinformation leakage, information theft, information change can be done by a malicious nodeat the time of communication between two legitimate nodes...
Keywords: Fault Tolerance; Checkpointing; Mobile Computing; Security
Downloads: 6
[texts]Design and Performance Evaluation of an Efficient Home Agent Reliability Protocol
Mobile IPv6 will be an integral part of the next generation Internet protocol. The importance of mobility in the Internet gets keep on increasing. Current specification of Mobile IPv6 does not provide proper support for reliability in the mobile network and there are other problems associated with it. This paper proposes “Virtual Private Network (VPN) based Home Agent Reliability Protocol (VHAHA)” as a complete system architecture and extension to Mobile IPv6 that supports reliability and of...
Keywords: Mobility Agents; VPN; VHAHA; Fault- tolerance and Reliability
Downloads: 37
[texts]Analysis and Enhancements of Leader Elections algorithms in Mobile Ad Hoc Networks
Mobile Ad Hoc networks (MANET), distinct fromtraditional distributed systems, are dynamic and selforganizingnetworks. MANET requires a leader to coordinateand organize tasks. The challenge is to have the right electionalgorithm that chooses the right leader based on variousfactors in MANET. In this paper, we analyze four leaderelection algorithms used in mobile Ad Hoc Networks. Factorsconsidered in our analysis are time complexity, messagecomplexity, assumptions considered, fault tolerance andti...
Keywords: Distributed Algorithms; Fault Tolerance; Leader Election; Mobile Ad Hoc Networks
Downloads: 14
[texts]10. Comp Sci IJCSEITR OPTIMIZED FAULT TOLERANCE Jatinder Kaur
Fault tolerance is one of the processes which are very essential due to risk attached to it. In case of any faultoccurrence in real environment, loss occurred in term of finance and reputation and even in term of user experiences.So there is an increased need to tolerate the fault for such type of systems to be used with cloud computing structure.For the development of this process and to provide better fault tolerance mechanism while using cloud computinginfrastructure for real time application...
Keywords: Fault Tolerance; Reliability; Cloud Computing and Real Time Computing
Downloads: 2
[texts]New Fault Tolerance Approach using Antecedence Graphs in Multi Agent Systems
Mobile agents are distributed programs which can move autonomously in a network, to perform tasks on behalf of user. They are susceptible to failures due to faults in communication channels, processors or malicious programs. In order to gain solid foundation at the heart of today’s e- society, the mobile agent technology must address the issue of fault tolerance. Checkpointing has been widely used technique for providing fault tolerance in mobile agent systems...
Keywords: Mobile agents; fault tolerance; antecedence graphs; checkpointing; message logs
Downloads: 53
[texts]A General Mathematical Model for the Simulation of Common Faults in ThreephaseVoltage Source Inverters
In the last years the fault problem in power electronics hasbeen more and more investigated both from theoretical andpractical point of view. This paper analyzes the problem offaults modeling in a three phase voltage source inverter(VSI)and presents a model of a VSI able to simulate both unfaultyand faulty conditions when one or more devices go broken.In the past the fault problem was faced step by stepconsidering the fault on each single device building a modelfor each case...
Keywords: Numerical models; Faults; Fault‐tolerance; PulseWidth Modulated Inverters
Downloads: 30
[texts]Genetic Evolution of Shape-Altering Programs for Supersonic Aerodynamics - Kennelly, Robert A., Jr
Two constrained shape optimization problems relevant to aerodynamics are solved by genetic programming, in which a population of computer programs evolves automatically under pressure of fitness-driven reproduction and genetic crossover. Known optimal solutions are recovered using a small, naive set of elementary operations. Effectiveness is improved through use of automatically defined functions, especially when one of them is capable of a variable number of iterations, even though the test pro...
Keywords: TECHNOLOGY UTILIZATION; SYSTEM FAILURES; ERROR ANALYSIS; FAULT TOLERANCE; AEROSPACE TECHNOLOGY TRANSFER; FAULT DETECTION
Downloads: 108
[texts]Investigation of Alert Zone and Display Concepts for Free Flight - Yang, Lee C.
To better understand the potential benefits and drawbacks of utilizing a probability-based method, a number of alternative approaches to the collision avoidance problem were examined and summarized in the paper ''Survey of Conflict Detection and Resolution Modeling Methods'' which was presented in August 1997 at the AIAA Guidance, Navigation, and Control Conference. The paper provides a summary and comparative evaluation of the many different approaches that have been used in the past to perform...
Keywords: RELIABILITY; LIBRARIES; LOW COST; COMPUTER SYSTEMS DESIGN; COST EFFECTIVENESS; FAULT TOLERANCE; FAULT DETECTION; MANUFACTURING; COMMERCE; SIMULATION
Downloads: 68
[texts]Space history, space policy, and executive leadership - Kraemer, Sylvia K
A lecture that attempts to establish the role of space historians in formulating space policy is presented. The discussion focusses on two adages and their relevance to space policy. The adages are as follows: 'write about what you know;' and 'good managers do things right; good executives do the right things.'
Keywords: DISTRIBUTED PROCESSING; ERROR DETECTION CODES; FAULT TOLERANCE; INTERPROCESSOR COMMUNICATION; PROTOCOL (COMPUTERS); ALGORITHMS; FAILURE; MESSAGE PROCESSING
Downloads: 83
[texts]Numerical simulations of drainage flows on Mars - Parish, Thomas R.
Data collected by Viking Landers have shown that the meteorology of the near surface Martian environment is analogous to desertlike terrestrial conditions. Geological evidence such as dunes and frost streaks indicate that the surface wind is a potentially important factor in scouring of the martian landscape. In particular, the north polar basin shows erosional features that suggest katabatic wind convergence into broad valleys near the margin of the polar cap...
Keywords: ALGORITHMS; CHANNELS (DATA TRANSMISSION); DATA LINKS; EMBEDDED COMPUTER SYSTEMS; FAULT TOLERANCE; FIBER OPTICS; REDUNDANCY ENCODING; MODULES
Downloads: 74
[texts]The Chesapeake Lighthouse and Aircraft Measurements for Satellites (CLAMS) Experiment - Smith, William L., Jr.
NASA has developed an Earth Observing System (EOS) consisting of a series of satellites designed to study global change from space. The EOS flagship is the EOS TERRA satellite, launched in December 1999, equipped with five unique sensors to monitor and study the Earth s heat budget and many of the key controlling variables governing the Earth's climate system. CLAMS, the Chesapeake Lighthouse and Aircraft Measurements for Satellites field campaign was conducted from NASA Wallops Flight Facility ...
Keywords: AUTOMATA THEORY; COMPUTER PROGRAMS; DESIGN OPTIMIZATION; FAULT TOLERANCE; STATISTICAL ANALYSIS; PARSING ALGORITHMS; MANUFACTURING
Downloads: 94
[texts]Intensity Biased PSP Measurement - Subramanian, Chelakara S.
The current pressure sensitive paint (PSP) technique assumes a linear relationship (Stern-Volmer Equation) between intensity ratio (I(sub 0)/I) and pressure ratio (P/P(sub 0)) over a wide range of pressures (vacuum to ambient or higher). Although this may be valid for some PSPs, in most PSPs the relationship is nonlinear, particularly at low pressures (less than 0.2 psia when the oxygen level is low)...
Keywords: ARCHITECTURE (COMPUTERS); FAULT TOLERANCE; COMPUTER NETWORKS; TOPOLOGY; QUALITATIVE ANALYSIS; QUANTITATIVE ANALYSIS; REDUNDANCY; RELIABILITY
Downloads: 73
[texts]Code GFACE: Gas lubricated face seals in laminar regime - Shapiro, Wilbu
A viewgraph presentation is given of the capabilities of the computer code GFACE. Capabilities include: varying geometries, including Rayleigh step, tapered land, and hydrostatic; variable grid; z, x-x, and y-y degrees of freedom; can determine position as a function of load; and English or SI units.
Keywords: FAULT TOLERANCE; JOINTS (JUNCTIONS); MANIPULATORS; RELIABILITY; DEGREES OF FREEDOM; REDUNDANT COMPONENTS; THREE DIMENSIONAL MOTION
Downloads: 88
[texts]Thermal Emission Variability of Zamama, Culann and Tupan on Io Using Galileo Near-Infrared Mapping Spectrometer (NIMS) Data - Ennis, M. E.
The Jovian satellite Io is the most volcanically active body in the Solar System. Previous analyses [e.g., 1-4] indicate the presence of high-temperature silicate volcanism on Io, similar to silicate volcanism occurring on Earth. Instruments onboard the Galileo spacecraft, especially the Near Infrared Mapping Spectrometer (NIMS) and the Solid State Imager (SSI), provided much data of Io s active volcanoes throughout the duration of the Galileo mission (June 1996-September 2003)...
Keywords: COMMUNICATION EQUIPMENT; ACCESS CONTROL; FAULT TOLERANCE; ARCHITECTURE (COMPUTERS); BROADCASTING; TIME DIVISION MULTIPLE ACCESS; RELIABILITY
Downloads: 87
[texts]Inducer Hydrodynamic Forces in a Cavitating Environment - Skelley, Stephen E
Marshall Space Flight Center has developed and demonstrated a measurement device for sensing and resolving the hydrodynamic loads on fluid machinery. The device - a derivative of the six-component wind tunnel balance - senses the forces and moments on the rotating device through a weakened shaft section instrumented with a series of strain gauges. This rotating balance was designed to directly measure the steady and unsteady hydrodynamic loads on an inducer, thereby defining the amplitude and fr...
Keywords: TRANSISTOR LOGIC; AUTOMATA THEORY; FAULT TOLERANCE; COMPUTER PROGRAMS; TRANSISTORS; DEFECTS; MANUFACTURING
Downloads: 114
[texts]Optical Detection of Lightning from Space - Boccippio, Dennis J.
Optical sensors have been developed to detect lightning from space during both day and night. These sensors have been fielded in two existing satellite missions and may be included on a third mission in 2002. Satellite-hosted, optically-based lightning detection offers three unique capabilities: (1) the ability to reliably detect lightning over large, often remote, spatial regions, (2) the ability to sample all (IC and CG) lightning, and (3) the ability to detect lightning with uniform (i.e., no...
Keywords: FAULT TOLERANCE; ERROR ANALYSIS; MODEMS; SPACE STATIONS; FAILURE; DOWNTIME; FAULTS; TELESCOPES
Downloads: 120
[texts]SCATTERING OF SOUND BY ATMOSPHERIC TURBULENCE PREDICTIONS IN A REFRACTIVE SHADOW ZONE - MCBRIDE, WALTON E.
ACCORDING TO RAY THEORY, REGIONS EXIST IN AN UPWARD REFRACTING ATMOSPHERE WHERE NO SOUND SHOULD BE PRESENT. EXPERIMENTS SHOW, HOWEVER, THAT APPRECIABLE SOUND LEVELS PENETRATE THESE SO-CALLED SHADOW ZONES. TWO MECHANISMS CONTRIBUTE TO SOUND IN THE SHADOW ZONE: DIFFRACTION AND TURBULENT SCATTERING OF SOUND. DIFFRACTIVE EFFECTS CAN BE PRONOUNCED AT LOWER FREQUENCIES BUT ARE SMALL AT HIGH FREQUENCIES. IN THE SHORT WAVELENGTH LIMIT, THEN, SCATTERING DUE TO TURBULENCE SHOULD BE THE PREDOMINANT MECHANI...
Keywords: ALGORITHMS; FAULT TOLERANCE; MESSAGE PROCESSING; PROGRAM VERIFICATION (COMPUTERS); SIMPLIFICATION; THEOREM PROVING; CHARACTERIZATION; CIRCUITS; CONSISTENCY
Downloads: 121
[texts]A method for tailoring the information content of a software process model - Perkins, Sharon
The framework is defined for a general method for selecting a necessary and sufficient subset of a general software life cycle's information products, to support new software development process. Procedures for characterizing problem domains in general and mapping to a tailored set of life cycle processes and products is presented. An overview of the method is shown using the following steps: (1) During the problem concept definition phase, perform standardized interviews and dialogs between dev...
Keywords: ARTIFICIAL INTELLIGENCE; CONTROL SYSTEMS DESIGN; FAULT TOLERANCE; NEURAL NETS; RELIABILITY ENGINEERING; ROBUSTNESS (MATHEMATICS); MAINTAINABILITY; REDUNDANCY
Downloads: 204
[texts]Managing Multiple Tasks in Complex, Dynamic Environments - Freed, Michae
Sketchy planners are designed to achieve goals in realistically complex, time-pressured, and uncertain task environments. However, the ability to manage multiple, potentially interacting tasks in such environments requires extensions to the functionality these systems typically provide. This paper identifies a number of factors affecting how interacting tasks should be prioritized, interrupted, and resumed, and then describes a sketchy planner called APEX that takes account of these factors when...
Keywords: FAULT TOLERANCE; RELIABILITY ENGINEERING; CONTROL SYSTEMS DESIGN; RELIABILITY ANALYSIS; SYSTEM FAILURES; REDUNDANCY; MARKOV PROCESSES; PROBABILITY THEORY
Downloads: 141
[texts]Synthesis and Characterization of Polyimides with Ether Linkages - Chuang, Kathy C.
A series of polyimides derived from a newly synthesized diamine, namely, 4,4-bis(4-aminophenoxy)-2,2-dimethylbiphenyl (BAPD), were developed and characterized. Their physical and thermal properties were compared to polyimides based on'commercially available 2,2-bis(4-(4-aminophenoxy)phenyl)propane (BAPP).
Keywords: FUZZY SYSTEMS; FAULT TOLERANCE; EXPERT SYSTEMS; WATER MANAGEMENT; WATER RECLAMATION; WATER FLOW
Downloads: 229
[texts]Three-dimensional trajectory analyses of two drop sizing instruments: PMS OAP and PMS FSSP - Norment, Hillyer G
Flow induced distortions of water drop fluxes and speeds seen by the instruments were predicted by use of three dimensional flow and trajectory calculation methods. Sensitivities were determined for the instruments, in isolation and mounted under the wing of an airplane, to: water drop diameter (2 to 1000 microns), angle of attack and free stream air speed. For the optical array probe in isolation and on the airplane at 0 deg angle of attack, flux distortions of practical consequence are not fou...
Keywords: COMPUTER PROGRAMS; FAULT TOLERANCE; NONCONSERVATIVE FORCES; ERROR ANALYSIS; ESTIMATES; MARKOV PROCESSES; RELIABILITY
Downloads: 74
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